/*
 * Copyright (c) 2002, 2003, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 */

package com.sun.corba.se.impl.protocol;

import org.omg.CORBA.BAD_OPERATION;
import org.omg.CORBA.INTERNAL;
import org.omg.CORBA.SystemException;
import org.omg.CORBA.CompletionStatus;

import com.sun.corba.se.spi.protocol.LocalClientRequestDispatcher;
import com.sun.corba.se.spi.protocol.ForwardException;

// XXX This should be in the SPI
import com.sun.corba.se.impl.protocol.LocalClientRequestDispatcherBase;

import com.sun.corba.se.spi.oa.OAInvocationInfo;
import com.sun.corba.se.spi.oa.ObjectAdapter;
import com.sun.corba.se.spi.oa.OADestroyed;

import com.sun.corba.se.spi.orb.ORB;

import com.sun.corba.se.spi.ior.IOR;

import com.sun.corba.se.spi.logging.CORBALogDomains;

import com.sun.corba.se.impl.logging.POASystemException;

public abstract class ServantCacheLocalCRDBase extends LocalClientRequestDispatcherBase {

  private OAInvocationInfo cachedInfo;
  protected POASystemException wrapper;

  protected ServantCacheLocalCRDBase(ORB orb, int scid, IOR ior) {
    super(orb, scid, ior);
    wrapper = POASystemException.get(orb,
        CORBALogDomains.RPC_PROTOCOL);
  }

  protected synchronized OAInvocationInfo getCachedInfo() {
    if (!servantIsLocal) {
      throw wrapper.servantMustBeLocal();
    }

    if (cachedInfo == null) {
      ObjectAdapter oa = oaf.find(oaid);
      cachedInfo = oa.makeInvocationInfo(objectId);

      // InvocationInfo must be pushed before calling getInvocationServant
      orb.pushInvocationInfo(cachedInfo);

      try {
        oa.enter();
        oa.getInvocationServant(cachedInfo);
      } catch (ForwardException freq) {
        throw wrapper.illegalForwardRequest(freq);
      } catch (OADestroyed oades) {
        // This is an error since no user of this implementation
        // should ever throw this exception
        throw wrapper.adapterDestroyed(oades);
      } finally {
        oa.returnServant();
        oa.exit();
        orb.popInvocationInfo();
      }
    }

    return cachedInfo;
  }
}

// End of File
